ok i have ati installed BUT in certain games i see "OpenGL: not supported". Also, Beryl works with all effects. However, after "glxinfo" i get the following:

name of display: :0.0
Xlib: extension "XFree86-DRI" missing on display ":0.0".
display: :0 screen: 0
direct rendering: No
server glx vendor string: SGI
server glx version string: 1.2

server glx extensions:
GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method,
GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_hyperpipe,
GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig
client glx vendor string: ATI
client glx version string: 1.3

client glx extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_import_context,
GLX_ARB_get_proc_address, GLX_SGI_video_sync, GLX_ARB_multisample,
GLX_ATI_pixel_format_float, GLX_ATI_render_texture
GLX extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_import_context,
GLX_ARB_multisample
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon Xpress Series
OpenGL version string: 1.2 (2.0.6458 (8.36.5))

OpenGL extensions:
GL_ARB_multitexture, GL_ARB_texture_border_clamp, GL_ARB_texture_cube_map,
GL_ARB_texture_env_add, GL_ARB_texture_env_combine,
GL_ARB_texture_env_dot3, GL_ARB_transpose_matrix, GL_EXT_abgr,
GL_EXT_blend_color, GL_EXT_blend_minmax, GL_EXT_blend_subtract,
GL_EXT_texture_env_add, GL_EXT_texture_env_combine,
GL_EXT_texture_env_dot3, GL_EXT_texture_lod_bias
glu version: 1.3
glu extensions:
GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess

visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x2c 24 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 1 0 None
0x2d 24 tc 0 32 0 r . . 8 8 8 8 0 0 0 0 0 0 0 1 0 None
0x2e 32 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 1 0 Ncon
0x2f 32 tc 0 32 0 r . . 8 8 8 8 0 0 0 0 0 0 0 1 0 Ncon